package bluej.stride.framedjava.elements;

import java.util.stream.Stream;

import bluej.stride.generic.InteractionManager;
import nu.xom.Element;
import bluej.stride.framedjava.ast.FilledExpressionSlotFragment;
import bluej.stride.framedjava.ast.HighlightedBreakpoint;
import bluej.stride.framedjava.ast.JavaSingleLineDebugHandler;
import bluej.stride.framedjava.ast.JavaSource;
import bluej.stride.framedjava.ast.SlotFragment;
import bluej.stride.framedjava.frames.DebugInfo;
import bluej.stride.framedjava.frames.ThrowFrame;
import bluej.stride.generic.Frame;
import bluej.stride.generic.Frame.ShowReason;

public class ThrowElement
extends CodeElement implements JavaSingleLineDebugHandler{    
   public static final String ELEMENT = "throw";
   
   private final FilledExpressionSlotFragment val;
   
   private ThrowFrame frame;
    
   
   public ThrowElement(ThrowFrame frame, FilledExpressionSlotFragment val, boolean enabled)
   {        
      this.frame = frame;
       
      this.val = val;
       
      this.enable = enabled;     
      }

   
   @Override
   
   public JavaSource toJavaSource()
   {        
      return new JavaSource(this, f(frame, "throw "), val, f(frame, ";"));     
      }

   
   @Override
   
   public LocatableElement toXML()
   {        
      LocatableElement throwEl = new LocatableElement(this, ELEMENT);
      throwEl.addAttributeStructured("value", val);
      addEnableAttribute(throwEl);
       
      return throwEl;     
      }
    
   
   public ThrowElement(Element el)
   {        
      val = new FilledExpressionSlotFragment(el.getAttributeValue("value"), el.getAttributeValue("value-java"));
      enable = Boolean.valueOf(el.getAttributeValue("enable"));     
      }

   
   @Override
   
   public Frame createFrame(InteractionManager editor)
   {        
      frame = new ThrowFrame(editor, val, isEnable());
       
      return frame;     
      }

   
   @Override
   
   public HighlightedBreakpoint showDebugBefore(DebugInfo debug)
   {
      return frame.showDebugBefore(debug);     
      }
    
   
   @Override
   
   public void show(ShowReason reason)
   {
      frame.show(reason);             
      }
    
   
   @Override
   
   protected Stream getDirectSlotFragments()
   {
      return Stream.of(val);     
      } 
   }